MRI and medical considerations

Learn how we design Cochlear™ implants to be compatible with MRI.

What you'll find on this page

  • Information about getting an MRI with a Nucleus® implant.
  • Information about getting an MRI with a Baha® implant.
  • How Cochlear designs implants that are compatible with MRIs.

MRIs can range in strength from 0.2 T to 7.0 T, with 1.5 T being the most common.1

Cochlear Nucleus Implants: designed for MRI compatibility at 1.5 T and 3.0 T

We designed the Nucleus® Profile™ Plus Series Implant so you can have a routine 1.5 T MRI or a high-definition 3.0 T MRI without removing the magnet1.

This means no additional surgery, no need to wear a bandage in the MRI machine, no waiting for your scan and, most importantly, no unnecessary time without sound.2

Nucleus Profile and Cl24RE/Freedom® implants are designed to be compatible for MRI at 3.0 T with the magnet removed and at 1.5 T with the magnet in place.1

Alternatives to MRI

Many people never need an MRI scan. For cochlear implant recipients there is often other technology that can be used instead.

In a recent poll of radiology professionals, 85% agreed they have an alternative diagnostic tool for patients who cannot undergo an MRI due to having a device or implant with a magnet.3

More Cochlear recipients have MRI-compatible implants than any other cochlear implant brand

Cochlear was the first manufacturer to introduce cochlear implants with removable magnets in 1997. Our removable magnet means that a patient implanted more than 20 years ago can still access today’s MRI technology.

Committed to helping you

MRI compatibility is only one of many considerations when choosing a cochlear implant system. Combined with our exceptional reliability record and industry-leading electrode technology, everything about our implant design supports our commitment to our recipients.

Blurred MRI with magnet in place. Image courtesy of  The Hannover Medical School Department of Neuroradiology, Hannover, Germany


MRI for Cochlear Baha systems


For the Baha Connect system, as long as the sound processor is removed, you can be scanned by MRI. There will be some slight shadow effects caused by the implant and the abutment.

For the Baha Attract system, as there is an implanted magnet, the system is conditionally approved to 1.5T and there will be a large area of shadow.

For any additional strength MRI or to reduce shadow area, the magnet can be temporarily removed by a medical procedure. The sound processor should be removed for all MRI.

Prior to receiving an MRI, please consult with your clinician about proper precautions.



Please seek advice from your health professional about treatments for hearing loss. Outcomes may vary, and your health professional will advise you about the factors which could affect your outcome. Always read the instructions for use. Not all products are available in all countries. Please contact your local Cochlear representative for product information.

For a full list of Cochlear’s trademarks, please visit our Terms of Use page.


  1. The following implants are designed to be compatible for MRI at1.5 T and at 3.0 T with magnet in place: Nucleus Profile Plus Series: Cl612, Cl622, Cl632. The following implants are designed to be compatible for MRI at 3.0 T with the magnet removed (should your doctor specifically recommend this procedure) and 1.5 T with magnet in place with use of the Cochlear Nucleus Implant Bandage and Splint Kit: Nucleus Profile Series: Cl512, Cl522, Cl532. Nucleus Cl24RE: C1422, Cl24REH, Cl24RE(CA), and Cl24RE(ST)

  2. Magnetic Imaging Resonance (MRI) Forecast to 2020; MarketsandMarkets; 2016.
  3. Radiology Poll conducted by Penn, Schoen, Berland: Survey of 152 practicing radiologists and radiographers, USA, August 2015 (data on file).